and exceeding the old
by 140 hours. In Reykjavík the number of sunshine hours was 1587. This is the second
highest annual total since the measurements started in 1911, only exceeded by the year 1924.
Sea level pressure
The average sea level pressure in Reykjavík was 1007.4 hPa, 1.5 hPa higher than the 1961 to
1990 mean. The highest pressure measured in the country during the whole year was 1039.0
/media/vedurstofan/utgafa/skylduskil/ved-eng-2012.pdf
meðallagi á árinu. Mikið norðanóveður gekk yfir landið dagana 10. til 11. desember sem
olli miklu tjóni. Verst var veðrið á Ströndum, Norðurlandi vestra og Norðurlandi eystra. Mikil ísing og fannfergi fylgdu
óveðrinu sem olli því að hundrað hross fennti í kaf, skemmdir urðu á rafmagnslínum með tilheyrandi rafmagnstruflun-
um og mikil röskun varð á samgöngum.
NÁTTÚRUFAR
Hl
ut
fal
l m
eð
all
ag
s
/media/vedurstofan-utgafa-2020/VI_arsskyrsla2020.pdf
the average of the (wind speed) distribu-
tion is given by
m = AG(1+1=k) ; (2)
with gamma function, G, defined as usual. Wind power density, a measure of the energy flux
through an area perpendicular to the direction of motion, varies not only with the cube of wind
15
Figure 2. Annual modelled distributions (dashed lines) and corresponding Weibull fits
(solid lines) of wind speed at 50 mAGL, for two
/media/vedurstofan/utgafa/skyrslur/2013/2013_001_Nawri_et_al.pdf